This paper concerns the solvability of a nonlinear fractional boundary value problem at resonance. By using fixed point theorems we prove that the perturbed problem has a solution, then by some ideas from analysis we show that the original problem is solvable. An example is given to illustrate the obatined results.
Keywords: Banach contraction principal; Existence of solution; Fractional boundary value problem at resonance; Schaefer fixed point theorem.